Description
Hioki 3274 Clamp Probe for Accurate Wideband Current Monitoring
The Hioki 3274 Clamp On Probe is engineered for professionals who require precise current measurement across a wide frequency range. Supporting DC to 10 MHz signals and continuous currents up to 150 A, the probe allows engineers and technicians to capture both transient and steady-state currents in power electronics, motor controllers, inverters, and switching power supplies.
Wideband Measurement and Peak Handling
The probe features a wide DC to 10 MHz bandwidth and a fast rise time of 35 ns or shorter, enabling accurate capture of high-speed current fluctuations. It can handle peak currents of up to 300 A (non-continuous) or 500 A for short pulses (≤30 μs), making it suitable for monitoring sudden inrush currents and short-duration events.
High Accuracy and Low Noise
With amplitude accuracy of ±1 % reading up to 150 A RMS and low noise levels of 25 mA RMS, the 3274 delivers precise readings even in challenging electrical environments. The high permeability magnetic shield minimizes the effects of nearby magnetic and electric fields, ensuring stable and reliable measurement.
User-Friendly Connectivity and Portability
The probe connects directly to oscilloscope or Memory HiCorder BNC input terminals for hassle-free operation. A compact design, lightweight body, and included carrying case make the 3274 ideal for both laboratory and field use. Optional Power Supply 3269/3272 ensures continuous operation without offset drift.
Applications
The 3274 is perfect for waveform observation, design verification, and troubleshooting in industrial equipment such as inverters, motors, and switching power supplies. Its combination of high-frequency response, peak handling, and low-noise performance makes it a versatile tool for electrical engineers.
Technical Specifications Table
| Specification | Details |
| Product Name | Hioki 3274 Clamp On Probe |
| Measurement Range | Continuous 150 A RMS, Peak 300 A (non-continuous), 500 A (pulse ≤30 μs) |
| Frequency Bandwidth | DC to 10 MHz (-3 dB) |
| Rise Time | ≤35 ns |
| Noise Level | 25 mA RMS max (20 MHz BW) |
| Output Rate | 0.01 V/A |
| Connection | BNC output terminal |
| Shielding | High permeability magnetic shield |
| Core Diameter | φ20 mm (0.79 in) |
| Power Supply | ±12 V ±1 V, 5.5 VA max |
| Dimensions & Weight | 176×69×27 mm, 500 g |
| Accessories | Instruction manual ×1, Carrying case ×1 |
| Optional Power Supply | 3269/3272 |
| Applications | Inverters, motors, power supplies, waveform observation |
| Model Number | 3274 |
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